Meaning
The jaw. Beyond the plain body part, the jaw-bone stands in Jamaican speech for the act of talking, so to 'run yuh jaw-bone' or 'work yuh jaw-bone' is to talk a great deal — chatting, arguing, or running one's mouth. A person who talks too much is said to have a busy jaw-bone, and to 'give yuh jaw-bone a rest' is to tell someone to be quiet.
Examples
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Stop run yuh jaw-bone an do di work.
Stop running your mouth and do the work.
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Him jaw-bone nuh stop from mawnin.
His mouth hasn't stopped since morning.
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Give yuh jaw-bone a rest.
Give your mouth a rest.
Origin
From 'jaw' + 'bone'; the jaw, extended to mean talking/running one's mouth. See [[labrish]], [[chat-bout]].
How it’s used
The jaw; figuratively, talking too much ('run yuh jaw-bone'). See [[labrish]], [[chat-bout]].